A 50 round loading block for .308 rifle rounds. Other cases with roughly the same diameter rim fit as well. Ex: 30-06, 280, 270, 8mm Mauser, 7X57mm, 243, 6mm Remington or any case with a .473" / 12mm case head. Basically, Many Mauser cartridge or derivative or cartridge based off the 30-06/308 and a bunch more
I have also uploaded a blank sided version of the tray if you intend to use it for other calibers.
Show in blue in the pictures.
9mm version https://www.printables.com/model/1255865-9mm-loading-tray
38spl/357 version https://www.printables.com/model/1502119-38-special-357-mag-loading-block
300BLK version https://www.printables.com/model/1502113-300-blk-loading-tray
308 version https://www.printables.com/model/1502318-308-loading-tray
Printables Tags: loading; 762; 473; 762x51; reloading; block; 51; 308; tray; casehead